Washing his dad's car alone, Aidan takes 6 hours. If his dad helps him, then it takes 2 hours. How long does it take Aidan's dad to wash the car by himself?

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Answer:

Step-by-step explanation:

If he washes his dads car alone it takes 6hrs, If his dad helps him it takes 2hrs.

6-2= 4

4hrs?

I dont understand the question lol.